MongoDB Exam C100DBA Topic 5 Question 101 Discussion

Actual exam question for MongoDB's C100DBA exam

Question #: 101
Topic #: 5

Consider a collection posts which has fields: Jd, post_text, post_author, post_timestamp, post_tags etc. Which of the following query retrieves ONLY the key named post_text from the first document retrieved?

Adb.posts.finOne({},{_id:0, post_text:1})

Bdb.posts.findOne({post_text: 1})

Cdb.posts.find({},{_id:Of post_text:1})

Ddb.posts.finOne},{post_text:l})

Show Suggested Answer

Suggested Answer: A

by Galen at Sep 14, 2024, 05:46 PM

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Charolette

8 hours ago

I think option C is the correct one. It's the only one that explicitly says 'post_text:1' to retrieve just that field.

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Valene

1 days ago

Option A looks good, it retrieves only the post_text field from the first document.

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Kanisha

12 days ago

I'm not sure, but I think it's C because we need to exclude the _id field.

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Tracey

19 days ago

I disagree, I believe the correct answer is B.

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Amie

20 days ago

I think the answer is A.

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